Sound-box for phonographs.



1; c. KUL'P.

SOUND BOX FOR PHONOGRAPHS.

APPLICATION FILED JUNE 3D. 1915.

MQW

Patented June 5, 1917.

i UNiTED srarns PATENT. foreros.

JOSEPH. o. KULP, vor lrrcuwoon, NEW JERsEY.

" so'UND-Box Fon PHOGRAPHS.

Patented Jane 5, 1917.

Application led June 30, 191,6. Seri91No.106,762. l

fTo all lwhom t m ay concern.'

Vlie vit knownthatI, Josemi C. KULr,a

' `citizen-of thel Unitedv States, residing at Linwood in the county of Atlantic and State of New Jersey, havemvented certain new and useful Improvements in SoundBoxes for lhonographs, of which the following is a specificatlon.-

My invention relates to talking machines and more specifically to the construction of tlie sound box and particularly 1n means to be used m ca-usmg the diaphragm of a phonographicsound box to be vibrated in accordance with the recorded soundwaves-of the record. f

One object of this invention is to provide such a means of vibrating the diaphragm as will eliminate the. objectionable scratchy, metallic or grinding sounds common in instruments of this class.

Another object is to provlde such a means of vibrating the diaphragm as will give a,

l clear, full and distinct tone.

' im roved vibrating attachment.

n the drawing the same reference characters represent the same parts throughout.

The sound box illustrated in Fig. II 4comprises a cylindrical casing 1 having a rim section 2 and an end section :3, frmlysecured thereto. The end section 8 is provided with a hub portion 4, and a central outlet 5.

To the hub 4 is attached a rubber sleeve 6, the sleeve serving as a means of attachment to the usual tone arm and amplifier (not shown). Supported in the usuari manner within the rim 2 of the casing is iapln'agm 7. Connected oscillatably to the .rim 2 of the casing is an ordinary stylus bar 8 terl minating at the end adjacent the diaphragm in a small hook 9. Attached to the hook is a. fine cord 10, the cord passing through, and

being securely fastened to, the center of the diaphragm 7. The other end ofthe cord ex- VSpeeilicationo1.' Letters Patent.

tends into the sleeve 6 and is attached to the spring member 11. may be any suitable resilient means, but in the form'shoun'it is a spring bar rigidly anchored at one end in the sleeve 6 and the This spring member other end extends 'freely vinto the central. I

part of the sleeve.-

The cord is connected `to this free end.

In assembling the device, the 'cord' is,A stretched between the spring member and',

the stylus bar hook, with the cord lpassing through a small opening-in the center of the diaphragm. The cord-is shortened 'until the spring 'mem-ber is under suitable tension or strain. The cord is vthen fastened securely to the spring member, stylus bar hook,

and the diaphragm. In fastening the'cord tothe diaphragm, any suitable means such as sealing wax may be used.

The cord used may be of 'any suitable', flexible, non-metallic material, such as a. silk, cotton or hemp thread or cord, and this cord 'is preferably waxed to avoid any changes in it from atmospheric,variations.

lVhat I claim as my invention is In a 'single sound box, the combination ofta casing, a diaphragm mounted therein, a.

stylus bar oscillatably mounted on the'ca-s ing and with olie end extending to oneside of and adjacent he diaphragm, a resilient;

member connecte( to the casing on the other side of the diaphragm, a Hexible non-metallic member connecting theresilient member with the end of the stylus bar ac ljacentthe` diaphragm, said flexible member` passing` through and` beine fastened to. the center of' the diaphragm su tantially asi described-f l# 2. In a single sound box, the combination of a casing, a diaphragm mounted thereining and disposed to one side of the diaphragm, a resilient member connected to the casing and disposed on the other side of thediaphragrn. ,and a fiexiblmeans connecting the resilient'member and stylusfbar, said fiexible means passingthrough,r and being fastened to, the center of said .dias phragrn, substantially as described.

3. In a sound box, the combination of a casing, a diaphragm mounted therein, a. stylus bar mountedto oscillato on the casing adjacent the diaphragm, a spring connected to the casing and disposed at the side of the dia hragm opposite to the stylus bar, and a fiiexiblemember connectingisaid spring and stylus bar, said flexible member passing 9E a stylus bar oscillatably mounted on the casthrough.- and being fastened to thev center of said diaphragm ssiihstniitiall)r as deserihed.

LII a sound hox, the evoiiihination of a. casing, a diaphragm mounted therein, a stylus harmoiinted to oaeillate on the easing', a spi-ing bai' rigidly mounted at one end oii themmiiig, and a flexible member connectingl the free und of lmid spring with said stylus har, said 'tlexihle meniher passing througih7 and lining' fastened to. lsaid diaphragm suhstaiitially as desa'frhed.

In nfsound hox, the combination of ii raming. a diaphragm mounted therein, a sti'- lus haimounted to oseillate on the easing', a :x1-Wing.: har rigidly mounted at om` end on the-easing, und a lexihle lihrous meiiilier ronnect'ing 'the free end ot' Ieza'id stylus liar' with tlie free c nd of said spring har. said [texi-tile ti hi'oii.-.- member passing through and Iii-ing fasti-.luid tio saddiaphragm suhstautally as des Iii-fa `oundhox, the comhiiiation' o1 a t. liiipliiiagm mounted therein.l a styluisv .v mouijited tojoaeillate on -the easing, a resilient lue-nhen'rigidly mounted at one I n the easing, and a flexible nieniheitdnliegt-ing tliefree vend of sait-1 resilient meinlr with said stylus: harffsaid Hexihle inem- 6r l1ii2isi-n`i;v -v said?- diaphragm,

throtiglnu 'and heini; fastened to, Substantial ly l all; described. 7,. Inv nj So'uid box, :the lcon-ih'mation -of a easrif-g",=` a diap ijagm mounted',tlierei'n, a stylus bai" niou-uteit to onollate on thefe'asing, a springrig-i'( mounted at one end on the easjnjgantl, av flexible ii'ieii'ihei' connecting the free'nthof 'said .spring with-said Stylus'bar,

hte men'iher pa ng through and d 'ti-),'sa'id diaphragm. Q a Sound h ox', the eoinhinatioii of a i l gin momi'teditliezizei'n, a1 styo lla-te on the easing, )ted at, one end on the itallie member aid .sriritiggg"withV xi'h'le non etallie oiugrlji,A :m, 'llieiii 1g f ei'ied ing. tlir gni.

id, htm, tho combination ot" a )hi gin.'moi-Intelltherein, a. ."y-

to. oseillate jon the oei-sing, idly iiiouiited at, one, ei'id on a'. f .lex-ihle ,suhnt'ai-itially in'- the free end of stylus har, .'aid

are, jid arma-fainltlr.. Il'ii a :hound-V )oxy-the combination of a. v'

using. a diaphragm mounted therein, a Stylus har mounted to oseilhite' on the casing, u lQprin'g har rigidi)y mounted at one end .on the easing, and a flexible cord connecting the' t'ree end of said spring bar with said .stylus har, said eord mssing tl'iroiigh,` and being tasti-ned to, Iaaiil diaphragm.

1l. `ln a lSound hoxg'lth'e eonihination of u, easing, a daphragn'i mounted ther-ein, a stylus har mounted to oseillate on the musings a spring mounted a't, one eiidon the Casin-g, and a lexhle suhstantially inelatiie mem; her eminem-ting" the free end of saiitslii'ing with said stylus har, Iaid liexihle. member passing' through. and heilig fastened to; Saul diaphragm.

l2. ln a `nouiid hox7 the eomhination of a easiiif. a diaphragm mounted therein, ay stylu ha-l mounted to osi'itlat'ion .the rasinl, a spring' rigidi)Y mounted at. one end oii the easing, and a lexihle cord eonnei't'ng the tri-e. end o't' said spring ivith'said stylus hai", said nord pausing through7 andhei-ig fastened to, said diaphragm.'

1?. 1n :thingie-Hound box,

the con'ihiiiatioii ot' a iiiniiig,liii\=iiig atuhular inoniher ope-iiiug therefrom at one side. for connect-ion' with a tone arm, andiapliragii'iii'iountedjn said easiug, astylus-` haroseillatahly- -mourit-- ed on the easiiugr at the. sident' the-dia-iilriagin opposite. to the tuliulai iiieiiheig-ai-'esl'liei'i't' member in said tuhular memher and-secured at one end thereto, atlexible iion=u`ietallie oord eonneotingj-sad resilient. uiei'i'iheii andstyluhI har, said eord passing'thro'ugh'and-being' fastened to said diaphragm. yll 14. lli a single Hound ho.\j,the ooiiibi-ii'atio1 ot' a easing having a. -tl-'iluilai-r men'iber open iureY therefrom :it/one. `s'ide t'oi' eoui'iectioi with a tone arm, a diaphi i said-easing,- aslatylu's ha'ii y ed outhe oi'isi'nil" at'y the. f sa phragiii opposite. tosaid tzuhuliii.'` ini'i'uiht, dpr-hip; har liii said tn hulai.- i'rioiriheiF-and lia'ltii Witi-ieisiseisv liisiiifrita'iil E. W i ii-'if MAN, 4lvl/,unam ].t`. Campania.. 

